13 Apr '17, 6pm

Flexibility to update firmware, a key to IoT devices

Flexibility to update firmware, a key to IoT devices

The updatable portion of the firmware must be organized in sectors and blocks in such a manner that there is enough flexibility to allow both limited and maximum feature/function updates. Since the speed of an update is determined by the number of sectors and blocks that need to be erased and re-programmed, it is better to think of speed and flexibility together when organizing the updatable portion of the firmware. Figure 2 shows an example of organizing the memory into updatable and non-updatable portions. Non-updatable portions (such as boot code) are stored in protected regions, while updatable portions of firmware (such as features/functions) are divided into smaller or larger blocks based on flexibility requirements. Updatable image files are stored in larger blocks and updatable variables/parameters are stored in smaller blocks.

Full article: http://embedded-computing.com/articles/flexibility-to-upd...

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